/Engine/Plugins/Runtime/StateTree/Source/StateTreeModule/Public/StateTreeDelegates.h
Called when parameters of the StateTree EditorData changed. This should mainly used by the asset editor to maintain consistency in the UI for manipulations on the EditorData until the tree gets compiled.
typedef TMulticastDelegate_OneParam< void, const [UStateTree](API\Plugins\StateTreeModule\UStateTree) & > FOnParametersChanged